package com.itheima.reggie.common;

import lombok.Data;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

/**
 * 通用返回结果，服务端响应的数据最终都会封装成此对象
 *
 * @param <T>
 */
@Data
public class R<T> implements Serializable {

    private static final long serialVersionUID = 1L;

    private Integer code;  //编码：1成功 0失败

    private String msg; //消息

    private T data;  //数据

    private Map map = new HashMap();  //动态数据

    public R() {

    }

    public R(Integer code,String msg,T data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }



    public static <E> R<E> success(E object) {
        R<E> r = new R();
        r.data = object;
        r.code = 1;
        return r;
    }

    public static <E> R<E> error(String msg) {
        R r = new R();
        r.msg = msg;
        r.code = 0;
        return r;
    }

    public R<T> add(String key, Object value) {
        this.map.put(key, value);
        return this;
    }
}
